Door check and closer.



G. A. BERRY.

DOOR CHECK AND CLOSER. APPLICATION mu) NOV. 8, IHIG 1,254,877. PatentedJan. 29, 1918.

6 a M 1a INVFNTOR /6. a, Whammy;

UNITED STATES PATENT OFFICE.

CHARLES A. BERRY, or STAMFORD, CONNECTICUT, ASSIGNOR ro- THE YALE &rownn MANUFACTURING COMPANY, or sramroma, CONNECTICUT.

To all whom it may concern.-

Be it known that I, Ciunnns A. BERRY, a citizen of the United States,and .a resident'of Stamford, in the county of Fair field and State ofConnecticut, have invented certain new and useful Improvements-in DoorChecks andlClosers; and I do hereby declare the following to be afull,'clear and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in door checks andclosers andmore particularly to a safety device employed in conjunction therewith,the object of the invention being to provide and conveniently locatefusible means for controlling the re lease of the door holding means inthe event of a fire, and thus cause the automatic closing-of the door bythe operation of the release of the door closing means.

\Vith this and other objects in View, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

.In the accompanying drawings; Figure l is a view of a door check andcloser showing an embodiment of my invention; Fig. 2 is a. plan view,and Fig. 3 is a detail view of the fusible disk.

1 represents the casing; of a door check and closer and 2 the spindle ofthe same, to which the lever arm is secured,said lever arm being adaptedfor cot'iperation with the mechanism of the device and for connectionopen, the cap or cover with the door in the usual manner.

For the purpose of holding the lever arm in position to retain the. doortemporarily JE-of the casing 1 is provided with a lug 5 and serves as astop with which a spring-pressed dog 6 carried by the lever arm e06erates. The dog 6 may consist of a ertically movable plunger mounted inaoss or enlargement! on the lever arm and having a beveled lower end 8.The dog 6 is provided somewhat below its'upper end with an annularshoulder 9 and the portion. of the dog above this shoulder forms a shank10,-tl1e upper end which may be elongated in form. A spring 11 issecured at one end to the lever arm 3 by means ofa rivet 12, 'or othersuitable fastening means, and the free end of this spring may beprovided wi'th a slot'13 to noon annex AND cnosmz.

spring 11.

Application filed November 8, 1916. Serial No. 130,199.

10 of the dog.

A fusible or destructible member is-dis-- face of thespringposed betweenthe under 11 and the shoulder 9 on the dog and. the

f rce of the spring to press the dog dow-n-" wardly is transmitted tosaid do through the medium-of said fusible mem li fusible member ordestructible member sists of a ring or annular disk 14 of suitablematerial made to encircle the shank of .the dog and rest upon theshoulder 9 and receive the pressure exerted by the A lug or projection 9is provided upon the upper surface of the lever arm 3, adjacent thefusible member, Sure of the spring 11 when the fusible member has beendestroyed and at the same time hold the spring 11 in a positionsufliciently elevated to allow the dog to rise freely and pass over thelug 5. The upper surface of the lug 9". should normally be anappreciable distance below the under surface of the spring in order thatthe pressure of'the spring may be exerted upon the dog- 6 through thefusible member until such time as theifusible member has been destroyed.

A screw 15 may be secured to the lever arm 3 at a point between its endsand pass freely through a hole in the spring 11,- said screw beingpiovided with a nut 16 to lVit h the use of a door check and closerembodying my improvements, it will be readily seen that if the door heheld open by engagement of the dog 6 with the lug or stop 5, and a fireshould occur in the room Where the door 1s located, the fusible mem-COII- Patented Jan. 29, 1918.-

er. The a a to receive the pres her will be broken down, destroyed. ornielted, and the tension of the spring upon the dog would be at oncerelieved, so that the lever arm wouldv be released by the dog 6- ridingpast the stop 5. and the door would be automatically closed.

Havin fully described my invention what I c laim as new and desire tosecure .by Letters-Patent, is

1. In a door check and closer, the combination with the casing providedthereon with a stop, the lever arm, a dog carried by the lever arm to.engage said stop to hold the door open, and a. spring secured to' the,

2. In a door cheek and closer the combination wit a casing p1: videdthereon with a stop, a lever arm, and a dog carried by the lever arm toengage said stop to hold the door open, of a spring secured to said armand adapted to press said dog toward the casing, and a fusible diskdisposed between the free end of said spring and said do a 3% In a doorcheek and closer, the combination with the casing provided thereon witha stop, and a lever arm, of a dog carried by the lever arm to engagesaid stop to hold the door open, said dog having an annular shoulder anda shank above said shoulder, a spring secured at one end to the leverarm and provided at its free end with an opening to receive the shank ofthe dog, and a fumble ring encircling the shank of the dog and disposedbetween the annular shoulder on the latter and the under face 0 said srin 4. n a door cheek and closer, the combination of a casing astop.thereon, a lever arm, a dog carriecf hyithe lever arm to engage saidstop, a sprin "secured to the lever arm, a fusible'mem ber etween thefree end of said spring and said-dog,'and a lug on the lever arm toreceive said spring when {he fusible member has'been redueed by eat.

In testimony whereof I have signed this speeifiea ion in the presence oftwo subscribing Wit esses. CHARLES A BERRY. W itneeses.

H, \V. MANN, WM. S. BALKHAM

